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Nelson's Pocket Mouse
Nelson's pocket mouse (''Chaetodipus nelsoni'') is a species of rodent in the family Heteromyidae. It is found in Mexico and in New Mexico and Texas in United States. It is named in honor of the American naturalist Edward William Nelson. Description Nelson's pocket mouse is a medium-sized, long-tailed pocket mouse growing to a total length of including a tail of . The external cheek pouches are lined with fur, the ears are small and oval in shape and the body is slender. The front feet are small while the hind feet are larger, and the fur on the rump contains numerous dark-tipped, grooved spines. The color of the back and sides is brown, the hairs having a dark gray base, a grayish-fawn centre and black tips. There is a pale area round the eye. The underparts are whitish with a narrow fawn line separating the color zones. The tail has sparse hairs on the front half and a crest of hairs on the back half which has a tufted tip. It closely resembles the lined pocket mouse (''Chaeto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinton Hart Merriam
Clinton Hart Merriam (December 5, 1855 – March 19, 1942) was an American zoologist, mammalogist, ornithologist, entomologist, ecologist, ethnographer, geographer, naturalist and physician. He was commonly known as the 'father of mammalogy', a branch of zoology referring to the study of mammals. Early life Clinton Hart Merriam was born in New York City in 1855 to Clinton Levi Merriam, a U.S. congressman, and Caroline Hart, a judge's daughter and a graduate of Rutgers Institute. The name Clinton, shared by both father and son, was in honor of New York governor DeWitt Clinton, whom the Merriam family had connections with. To avoid confusion, the younger Merriam went by his first initial combined with his middle name, his mother's maiden name, and thus often appears as C. Hart Merriam in both the literature of his time and thereafter. Although born in New York City, where his parents were staying the winter, the family home and place where Merriam spent his boyhood days was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larrea Tridentata
''Larrea tridentata'', called creosote bush and greasewood as a plant, chaparral as a medicinal herb, and ''gobernadora'' (Spanish language, Spanish for "governess") in Mexico, due to its ability to secure more water by inhibiting the growth of nearby plants. In Sonora, it is more commonly called ''hediondilla''; Spanish ''hediondo'' = "smelly". It is a flowering plant in the family Zygophyllaceae. The specific name ''tridentata'' refers to its three-toothed leaves. Distribution ''Larrea tridentata'' is a prominent species in the Mojave Desert, Mojave, Sonoran Desert, Sonoran, and Chihuahuan Desert, Chihuahuan Deserts of western North America, and its range includes those and other regions in portions of southeastern California, Arizona, southern Nevada, southwestern Utah, New Mexico, and Texas in the United States, and Chihuahua (state), Chihuahua, Sonora, Coahuila, Nuevo León, Zacatecas, Durango and San Luis Potosí, San Luis Potosì in Mexico. The species grows as far east a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Mexico
This is a list of the native wild mammal species recorded in Mexico. As of September 2014, there were 536 mammalian species or subspecies listed. Based on International Union for Conservation of Nature, IUCN data, Mexico has 23% more noncetacean mammal species than the U.S. and Canada combined in an area only 10% as large, or a species density over 12 times that of its northern neighbors. Mexico's high mammal biodiversity is in part a reflection of the wide array of biomes present over its latitudinal, climatic and altitudinal ranges, from lowland tropical rainforest to temperate desert to montane forest to alpine tundra. The general increase in terrestrial biodiversity moving towards the equator is another important factor in the comparison. Mexico includes much of the Mesoamerica#Biodiversity, Mesoamerican and Madrean pine-oak woodlands biodiversity hotspots. From a biogeographic standpoint, most of Mexico is linked to the rest of North America as part of the Nearctic realm. Howeve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of The United States
About 490 species of mammals are recorded in the United States. Unincorporated territories like for example Puerto Rico, Guam or Northern Mariana Islands are not covered. Mammals introduced and extinct in the Holocene except Pleistocene/Holocene boundary are included. According to the IUCN Red List 3 of these species are critically endangered, 20 endangered, 15 vulnerable, 20 near threatened and 4 extinct. Some species are identified as indicated below: *(A) - Accidental *(E) - Extinct *(Ex) - Extirpated (extinct in the US, but exists elsewhere in the world) *(I) - Introduced The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature: (v. 2013.2, the data are current as of March 5, 2014) and the Endangered Species Act: (the data are current as of March 28, 2014) Subclass: Theria Infraclass: Metatheria Order: Didelphimorphia (common opossums) ---- Didelphimorphia is the order of common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaetodipus
''Chaetodipus'' is a genus of pocket mouse containing 17 species endemic to the United States and Mexico. Like other members of their family such as pocket mice in the genus ''Perognathus'', they are more closely related to pocket gophers than to true mice. Characteristics Members of this genus range in size from 80 to 125 mm (head and body) and weigh 15–47 grams (Nowak, 1999). Unlike the silky pocket mice (genus ''Perognathus''), most species of the genus ''Chaetodipus'' have harsh pelage with some bordering on spiny hair. They tend to be found in arid habitats where they feed on seeds, vegetation, and insects (Nowak, 1999). Females give birth to a litter of 2–9 young after a gestation period of just under a month. The longest recorded life span is 8 years and 4 months (Nowak, 1999). Species *'' Chaetodipus arenarius'' – Little desert pocket mouse *'' Chaetodipus artus'' – Narrow-skulled pocket mouse *'' Chaetodipus baileyi'' – Bailey's pocket mouse *'' Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least Concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agave Lechuguilla
''Agave lechuguilla'' (common name in Chihuahua: ''lechuguilla'', meaning "small lettuce") is an ''Agave'' species found only in the Chihuahuan Desert. The plant flowers once in its life and then dies. Description The plant reproduces most often through underground offshoots, creating large colonies. It also can flower at any time after the plant has reached three to 21 years of age, producing a leafless stalk that can reach in height. The flower clusters are located at the top and are funnel-shaped in purples, reds, and yellows. The plant dies after flowering in May–July. The leaves are long, tough, and rigid, with very sharp, hard points that can easily penetrate clothing and even leather, giving the colloquial name "shin-daggers". Taxonomy Charles Wright first collected the plant in 1849 and it was described by John Torrey in 1859. Distribution and habitat It is an indicator species in the Chihuahuan Desert, the only place it is found. It typically grows on ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasylirion Wheeleri
''Dasylirion wheeleri'' (desert spoon, spoon flower, sotol, or common sotol) is a species of flowering plant in the asparagus family (Asparagaceae), native to arid environments of northern Mexico and the southwestern United States. Description ''Dasylirion wheeleri'' is a moderate to slow-growing evergreen shrub with a single unbranched trunk up to thick growing to tall, though often recumbent on the ground. The leaf blade is slender, long, gray-green, with a toothed margin. The leaves radiate from the center of the plant's apex in all directions (spherical). Blooming from May to July, the flowering stem grows above the foliage, to a height of tall and a diameter of . The stem is topped by a long plume of straw-colored small flowers about 2.5 cm long with six tepals. The color of the flower helps determine the gender of the plant, being mostly white for males and purple-pink for females. The fruit is an oval dry capsule long, containing a single seed. ''Dasylirion le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lined Pocket Mouse
The lined pocket mouse (''Chaetodipus lineatus'') is a species of rodent in the family Heteromyidae. This pocket mouse is endemic to a small area of central Mexico. Description The lined pocket mouse is smaller than most pocket mice in the genus ''Chaetodipus'', averaging in total length including a tail of . It resembles Nelson's pocket mouse (''Chaetodipus nelsonii'') in size and general appearance but lacks the stiff spines that that species has among the hairs on its rump. Its coloring is also distinctive; the dorsal surface is gray faintly lined with buff giving a drab appearance, the sides are gray and the underparts are white, with a fine buff line delineating the margin between sides and belly. Distribution and habitat The lined pocket mouse is found only in the states of San Luis Potosi and Zacatecas in central Mexico where it inhabits desert plains with xerophile scrub at altitudes between above sea level. Behavior The lined pocket mouse lives in a burrow and is no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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